Vulnerability in Apache Tomcat
CVE-2018-1336
An improper handing of overflow in the UTF-8 decoder with supplementary characters can lead to an infinite loop in the decoder causing a Denial of Service. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.7, 8.5.0 to 8.5.30, 8.0.0.RC1 to 8.0.51, and 7.0.28 to 7.0.86.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.204 (97.5th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.206 · newest: 0.204 · change: -0.002
Affected products
- Apache Tomcat — versions 8.0.0, 9.0.0
- Apache Software Foundation Tomcat — versions 8.5.0 to 8.5.30, 8.0.0.RC1 to 8.0.51, 7.0.28 to 7.0.86
- Canonical Ubuntu Linux — versions 14.04, 16.04
- Debian Linux — versions 8.0, 9.0
- Red Hat Enterprise Linux — versions 6.0, 7.0
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Workstation — versions 7.0
- Red Hat Jboss Enterprise Application Platform — versions 6.0.0, 6.4.0
- Red Hat Jboss Enterprise Web Server — versions 3.0.0, 5.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- usn.ubuntu.com/3723-1/ (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/104898 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2018:2740 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2741 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2921 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2742 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2018/dsa-4281 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2945 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2939 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2701 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-1336?
- CVE-2018-1336 is a high-severity vulnerability in Apache Tomcat, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2018-08-02.
- How severe is CVE-2018-1336?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-1336 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.